Novel and sweeping measures to control traffic around the Giants' new China Basin ballpark -- including steep parking prices and discounts on food for fans who ride public transit -- would be required under a resolution introduced yesterday before the San Francisco Board of Supervisors.

The so-called mitigation measures introduced by Supervisor Michael Yaki appear certain to be adopted, since they are the result of lengthy negotiations between several city agencies and the Giants. They are designed to limit traffic tie-ups when the 42,000-seat ballpark opens in 2000.

The measures, recommended by the City Planning Department and the
Redevelopment Agency
, include ideas contained in the environmental impact report that faces a final vote on Thursday. Approval by the Planning and Redevelopment commissions is considered a sure thing.

Under the proposal, the Giants and several public agencies -- the city Departments of Planning and Parking and Traffic, the Municipal Railway, BART, CalTrain and the Golden Gate Bridge District's ferry service -- would be required to form a Ballpark Transportation Coordinating Committee. The panel would devise a traffic routing plan for a ballpark that, with only 5,000 dedicated parking places, will have to rely on heavy transit use.

"Such measures may include charging for parking in the dedicated lots and concession discounts for fans who show evidence of riding on transit or ballpark shuttles," said the report.

Parking at Pac Bell Park undoubtedly will cost much more than the $6 charged for Giants games at 3Com Park. "Ballpark parking should be priced at a relatively high level, to encourage transit use," the report said.

The team and the Public Works and Parking and Traffic departments were ordered to erect signs on freeways and arterial streets directing fans driving to games to detours or available parking. The report said the Giants should "implement a low-frequency radio station to provide motorists with traffic and parking information in the vicinity of the ballpark."

Eventually, the Giants hope that 50 percent of the Pacific Bell Park fans will use public transit. To facilitate that, the team might be required to "provide Muni ticket dispensing machines in the ballpark." It also might have to offer to sell fans transit tickets when they pre-purchase tickets.

Muni planners still are trying to figure out how to handle the crush of fans pouring out of the ballpark at Third and King streets when games end. They don't want to have to collect tickets, a process that would hold up vehicle loading.

The measures say that Muni will "require patrons to display proof that they have paid fares only upon request by a Muni official."

Other transit measures include establishment of a Muni bus bridge running on Second and Third streets from the Montgomery Street BART station and the required use of long four-car trains on the Muni Metro's new ballpark extension after weekend day games.

The team also could be required to provide at least 150 secure bicycle parking places, with space to expand to about 500 places. There also could be a second storage area for in-line skates and skateboards.

Other ideas are offered as suggestions that could be implemented as the Giants, their fans and the ballpark's neighbors in the South Beach area see how things work out.

Included are the installation of programmable parking meters, which could be set for a two-hour maximum, so people going to games couldn't use them without getting costly parking tickets.

The team also could be required to contract with parking garages north of Market Street to provide spaces for weekend and night games, along with shuttle service to the stadium.

Residential parking permits also might be considered.

People driving to games could be required to pay for parking in advance. .

"The sponsor could restrict parking in off-street parking lots on game or event days to fans who have prepaid parking passes on their dashboards," the report suggested.